There are
2,360 mi
from Middletown, OH to Pleasant Hill, CA
That's the driving distance. It would take 1 day 17 hours to go from Middletown, Ohio to Pleasant Hill, California.
The flight distance (direct flight from Middletown, OH to Pleasant Hill, CA) is 2,018.03 mi.
2,360 mi = 3,798.35 kms